# header-chrome.ts **[Source](https://github.com/ubugeeei-prod/ox-content/blob/main/npm/vite-plugin-ox-content/src/header-chrome.ts)** > 10 documented symbols. Read the signatures first, then expand each item for parameters, return types, and examples.

10 symbols 4 functions 4 interfaces 1 types 1 modules 8 parameters 16 members 4 returns

## Reference

moduleheader-chromeOpt-in header nav, announcement, and per-page chrome helpers.

Opt-in header nav, announcement, and per-page chrome helpers.

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interfaceHeaderNavItemHeader nav link or dropdown.3 members

Header nav link or dropdown.

Signature

export interface HeaderNavItem

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Members

Properties

Name	Type	Description
`items`optional	`HeaderNavItem[]`
`link`optional	`string`
`text`	`LocaleLabel`

typeLocaleLabel = string | Record<string, string>Plain label or locale map ({ en: "Guide", ja: "ガイド" }).

Plain label or locale map ({ en: "Guide", ja: "ガイド" }).

Signature

export type LocaleLabel = string | Record<string, string>

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interfacePageChromeFlagsPer-page frontmatter chrome flags. false hides that region.7 members

Per-page frontmatter chrome flags. false hides that region.

Signature

export interface PageChromeFlags

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Members

Properties

Name	Type	Description
`aside`optional	`boolean`
`editLink`optional	`boolean`
`footer`optional	`boolean`
`lastUpdated`optional	`boolean`
`navbar`optional	`boolean`
`outline`optional	`boolean`
`sidebar`optional	`boolean`

fnparsePageChromeFlags(frontmatter: Record<string, unknown>): PageChromeFlagsReads hide flags from frontmatter. Non-boolean values are ignored.1 paramreturns PageChromeFlags

Reads hide flags from frontmatter. Non-boolean values are ignored.

Signature

export function parsePageChromeFlags(frontmatter: Record<string, unknown>): PageChromeFlags

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Parameters

frontmatter Record<string, unknown>

Returns

PageChromeFlags

interfaceResolvedHeaderNavItemNav item after locale maps are flattened to strings.3 members

Nav item after locale maps are flattened to strings.

Signature

export interface ResolvedHeaderNavItem

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Members

Properties

Name	Type	Description
`items`optional	`ResolvedHeaderNavItem[]`
`link`optional	`string`
`text`	`string`

resolveHeaderNavItems(items: HeaderNavItem[] | undefined, locale?: string, defaultLocale?: string): ResolvedHeaderNavItem[] | undefined

Resolves locale maps so NAPI always receives string labels.3 paramsreturns ResolvedHeaderNavItem[] | undefined

Resolves locale maps so NAPI always receives string labels.

Signature

export function resolveHeaderNavItems(items: HeaderNavItem[] | undefined, locale?: string, defaultLocale?: string): ResolvedHeaderNavItem[] | undefined

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Parameters

items HeaderNavItem[] | undefined
locale string

optional
defaultLocale string

optional

Returns

ResolvedHeaderNavItem[] | undefined

fnresolveLocaleLabel(text: LocaleLabel, locale?: string, defaultLocale?: string): stringPicks the exact locale, its language, the default locale, then the first non-em…3 paramsreturns string

Picks the exact locale, its language, the default locale, then the first non-empty own string in declaration order.

Signature

export function resolveLocaleLabel(text: LocaleLabel, locale?: string, defaultLocale?: string): string

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Parameters

text LocaleLabel
locale string

optional
defaultLocale string

optional

Returns

string

fnresolvePageChromeOption(value: boolean | Record<string, unknown> | undefined): booleanfalse or omitted stays off. true or {} enables default flag reading.1 paramreturns boolean

false or omitted stays off. true or {} enables default flag reading.

Signature

export function resolvePageChromeOption(value: boolean | Record<string, unknown> | undefined): boolean

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Parameters

value boolean | Record<string, unknown> | undefined

Returns

boolean

interfaceThemeAnnouncementAnnouncement bar. Text is escaped; no raw HTML slot.3 members

Announcement bar. Text is escaped; no raw HTML slot.

Signature

export interface ThemeAnnouncement

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Members

Properties

Name	Type	Description
`dismissKey`optional	`string`	Best-effort localStorage key for dismiss.
`link`optional	`string`	https or same-origin only.
`text`	`string`